Belgian admin,
finally clear.
Buy or rent? Employee or self-employed? Energy grants? We untangle it all — personalized quizzes and regional info.
The main topics
See all →One quiz,
one answer
made for you.
No jargon, no "it depends". Choose your topic, answer the questions and we point you to what really fits your situation.
Info by region
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Decisio's interactive tools
Three calculators to make informed decisions. Free, no signup, real-time results.
How we work
See all our sources →Decisio has no customer reviews and nothing to sell. What we can show is the method.
Official sources, named
Every figure comes from a public authority: FPS Finance, INASTI, INAMI, the Regions, the notariat. The full list is public.
A date on every page
Belgian scales change every year. Each page states the income year used and the date it was last checked.
Neither advice nor sales
We explain the rules and compute orders of magnitude. For your specific situation we point you to a notary, an accountant or the administration.